CN109723782B - Ball nut with dust cap - Google Patents
Ball nut with dust cap Download PDFInfo
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- CN109723782B CN109723782B CN201711038907.7A CN201711038907A CN109723782B CN 109723782 B CN109723782 B CN 109723782B CN 201711038907 A CN201711038907 A CN 201711038907A CN 109723782 B CN109723782 B CN 109723782B
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Abstract
The utility model provides a ball nut with shield, contains nut spare and shield, the nut spare has leads spiral shell portion, the shield install in nut spare one side to include the body, and at least one install in scraping of body brushes the piece, the body has at least one positioning groove group, positioning groove group has the several and encloses the constant head tank that is the interval setting around the axis, the tank bottom of each constant head tank to the distance inequality of the notch portion that corresponds, scrape brush the piece install at least in one of them constant head tank of positioning groove group, and have the location in the location portion of tank bottom, and be opposite to location portion just stretches to locate scrape brush portion in the hole of body. Utilize scrape the brush spare and install in the constant head tank of different positions, can produce different brush effects of scraping to the driving screw, and can reach the dustproof effect of preferred.
Description
Technical Field
The present invention relates to a transmission device, and more particularly, to a ball nut with a dust cap.
Background
In general, in a portion where a ball screw and a nut are engaged with each other, a dust-proof member is disposed at each end of the nut in order to prevent dust, machining chips, cutting fluid, and the like from penetrating between the ball screw and the nut. Such as taiwan certificate nos. M523023, I464336, I504824, I516694, I571577, etc.
Although the above patents all utilize the arrangement of the dustproof component to achieve the expected dustproof purpose of the nut, the dustproof component of the above patents is provided with a protruding portion which can abut against the ball screw on a main body in a hollow ring shape, that is, the protruding portion of the dustproof component cannot be adjusted at different depths and different angles relative to the ball screw according to requirements, and cannot produce a better dustproof effect according to the requirements.
Disclosure of Invention
The invention aims to provide a ball nut with a dustproof cover, which can generate better scraping and dustproof effects.
The invention relates to a ball nut with a dustproof cover, which comprises a nut piece and at least one dustproof cover, wherein the nut piece extends along an axis and is in a hollow cylinder shape, and is provided with an inner circumferential surface which surrounds the axis and can define a shaft hole, and at least one screw guide part arranged on the inner circumferential surface, the dustproof cover is arranged on one side of the nut piece along the axis and is arranged on the outer side of the screw guide part, and comprises a body and at least one scraping and brushing piece arranged on the body, the body is provided with a first end surface, a second end surface opposite to the first end surface along the axis, an inner ring surface which is connected between the first end surface and the second end surface and can surround and generate an inner hole, an outer ring surface opposite to the inner ring surface, and at least one positioning groove group which is concavely arranged from the first end surface to the second end surface, the positioning groove group is provided with a plurality of positioning grooves which are arranged at intervals around the axis, each positioning groove of the positioning groove group is provided with a groove opening part corresponding to the inner ring surface and a groove bottom part between the groove opening part and the outer ring surface, the distance from the groove bottom part of each positioning groove to the corresponding groove opening part is unequal, the scraping and brushing part is at least arranged in one positioning groove of the positioning groove group and is provided with a positioning part positioned at the groove bottom part and a scraping and brushing part which is opposite to the positioning part and extends into the inner hole.
The ball screw cap with the dustproof cover is characterized in that the number of the positioning groove groups of the dustproof cover is several, and the positioning groove groups are arranged around the axis at equal intervals.
The ball nut with the dustproof cover is characterized in that each positioning groove of the positioning groove group of the dustproof cover extends from the groove bottom to the groove opening along the central line of the positioning groove group, the distance between the central line of each positioning groove and a reference plane passing through the axis is unequal, the extending axial direction of the central line of each positioning groove is substantially parallel to the reference plane, and the reference plane extends substantially along the radial direction of the shaft hole.
The positioning groove of the dustproof cover is in a stepped groove hole shape, the positioning grooves are respectively provided with an expanding section corresponding to the bottom of the groove and an extending section extending from the expanding section to the groove opening, the circumferential width of the expanding section corresponding to the body is larger than the circumferential width of the extending section corresponding to the body, the positioning part of the scraping and brushing part is clamped and positioned in the expanding section, and the circumferential width of the positioning part corresponding to the body is larger than the circumferential width of the scraping and brushing part corresponding to the body.
The invention relates to a ball nut with a dustproof cover, wherein a scraping and brushing part of the dustproof cover is a hairbrush.
The invention relates to a ball nut with a dustproof cover, wherein each positioning groove of a positioning groove group of the dustproof cover extends from the groove bottom to the groove opening along the respective central line, and the intersection angles of the plane of each positioning groove passing through the respective central line and the reference plane passing through the axis are not equal.
The ball nut with the dustproof cover is suitable for being screwed on the guide screw, the guide screw penetrates through the shaft hole of the nut piece and the inner hole of the dustproof cover, the ball nut is provided with an outer surface and a thread groove which surrounds the axis, extends spirally and is arranged on the outer surface, and the scraping and brushing part can abut against the thread groove of the guide screw.
The invention has the beneficial effects that: utilize the setting of constant head tank, so can select different quantity to scrape the brush spare and install in at least one constant head tank according to the demand, and can make scrape the brush spare and produce the brush effect of scraping of different angles, the different degree of depth to the lead screw, can reach the dustproof purpose of preferred.
Drawings
FIG. 1 is an exploded perspective view of one embodiment of the ball nut with dust cap of the present invention;
FIG. 2 is a plan combined sectional view of the embodiment;
FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2;
FIG. 4 is a schematic top view of the embodiment;
FIG. 5 is a perspective assembly view of a dust cap of the embodiment, illustrating a body and a plurality of wiping members;
fig. 6 is an exploded perspective view of the dust cap of this embodiment.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1, 2 and 3, an embodiment of the ball nut with a dust cap according to the present invention is adapted to be screwed to a lead screw 1 extending along an axis L, the lead screw 1 having an outer surface 101 and a thread groove 102 extending spirally around the axis L and disposed on the outer surface 101. The ball screw nut includes a nut member 10 and a pair of dust caps 20.
The nut member 10 is hollow and cylindrical, and has an inner circumferential surface 12 surrounding the axis L and defining a shaft hole 11, and a thread guiding portion 13 protruding from the inner circumferential surface 12.
Referring to fig. 4 to 6, the dust covers 20 are respectively mounted on opposite sides of the nut member 10 along the axis L, are respectively disposed outside the screw guiding portion 13, and each include a body 21 and a plurality of scraping and brushing members 22 mounted on the body 21. The body 21 has a first end surface 211, a second end surface 212 opposite to the first end surface 211 along the axis L, an inner ring surface 214 connected between the first end surface 211 and the second end surface 212 and capable of surrounding to form an inner hole 213, an outer ring surface 215 opposite to the inner ring surface 214, and four positioning groove sets 23 recessed from the first end surface 211 toward the second end surface 212, the positioning groove sets 23 are disposed at equal intervals around the axis L, each positioning groove set 23 further has a plurality of positioning grooves 231 disposed at intervals around the axis L, each positioning groove 231 is in a stepped groove shape and has a groove bottom 232 corresponding to the inner ring surface 214, a groove bottom 233 between the groove bottom 232 and the outer ring surface 215, an expanding section 234 corresponding to the groove bottom 233, and an extending section 235 extending from the expanding section 234 toward the groove bottom 232, the cross-sectional shape of the enlarged section 234 perpendicular to the axis L is trapezoidal, and the circumferential width of the enlarged section 234 corresponding to the body 21 is greater than the circumferential width of the extension section 235 corresponding to the body 21. And the distances from the groove bottom 233 of the positioning groove 231 of each positioning groove group 23 to the corresponding groove opening 232 are different, each positioning groove 231 of the positioning groove group 23 extends from the groove bottom 233 to the groove opening 232 along a respective center line L1, the center line L1 of each positioning groove 231 is different from a reference plane P passing through the axis L, the center line L1 of each positioning groove 231 extends axially and substantially parallel to the reference plane P, and the reference plane P extends substantially along the radial direction of the shaft hole 11. In addition, as shown in fig. 4, each positioning groove 231 of the positioning groove group 23 has an unequal intersection angle of a plane P1 passing through the respective center line L1 and the reference plane P passing through the axis L.
The scraping and brushing members 22 of this embodiment are respectively installed in one of the positioning slots 231 of the positioning slot group 23, and each has a positioning portion 221 positioned at the slot bottom 233 and nested in the enlarged section 234, and a scraping and brushing portion 222 opposite to the positioning portion 221 and extending into the inner hole 213. The cross-sectional shape of the positioning portion 221 perpendicular to the axis L is trapezoidal, and the circumferential width of the positioning portion 221 corresponding to the body 21 is greater than the circumferential width of the scraping and brushing portion 222 corresponding to the body 21. The scraping and brushing portion 222 is a brush and can be abutted in the thread groove 102 of the lead screw 1.
As shown in fig. 2 to 5, when the dust cap 20 is assembled, the dust cap 20 is locked to the nut member 10 at opposite sides, and the ball nut is screwed onto the lead screw 1, the scraping part 222 of the scraping member 22 is abutted against the thread groove 102 of the lead screw 1, so that the ball nut can generate a better dust-proof effect.
The efficacy of the invention can be summarized as follows:
firstly, by utilizing the unequal distance between the center line L1 of each positioning groove 231 of the positioning groove group 23 and the reference plane P passing through the axis L, and the unequal distance between the groove bottom 233 of the positioning groove 231 and the corresponding groove opening 232, the scraping position where the scraping part 222 of the scraping and brushing member 22 abuts against the outer surface 101 of the lead screw 1 can be adjusted, so that the adjustment can be performed according to different requirements, and the adjustment operation is quite easy, and the scraping and brushing member 22 can be easily replaced and installed in different positioning grooves 231 only by detaching the body 21 from the nut member 10.
Secondly, by utilizing the effect that the intersection angle of the plane P1 passing through the center line L1 of each positioning groove 231 of the positioning groove group 23 and the reference plane P passing through the axis L is not equal, that is, the inclination angles of the positioning grooves 231 are different, the scraping and brushing part 222 of the scraping and brushing part 22 can generate the scraping and brushing effect with different angles on the outer surface 101 of the lead screw 1 according to different requirements, and the scraping and brushing effect is better.
Thirdly, in the present embodiment, one scraping and brushing member 22 is installed in one of the positioning grooves 231 of each positioning groove group 23, but in fact, one scraping and brushing member 22 can be installed in two of the positioning grooves 231 of each positioning groove group 23, or one scraping and brushing member 22 is installed in all the positioning grooves 231, and the installation number of the scraping and brushing members 22 can be adjusted according to different requirements.
If some scraping and brushing parts 22 generate abrasion, the body 21 can be easily detached, and some scraping and brushing parts 22 are replaced, all scraping and brushing parts 22 do not need to be replaced, and the body 21 does not need to be replaced, so that the purpose of saving cost can be achieved, and the requirement of environmental protection is met.
In summary, the ball nut with the dust cap of the present invention has a simple structure, and is easy to manufacture, assemble and replace, and the positioning groove 231 is used to generate scraping and brushing effects with different angles and different depths for the lead screw 1, thereby achieving the purpose of the present invention.
Claims (7)
1. The utility model provides a ball nut with shield, contains nut piece and at least one shield, ball nut's characterized in that:
the nut piece extends along an axis and is in a hollow cylinder shape, and is provided with an inner circumferential surface which surrounds the axis and can define a shaft hole, and at least one screw guide part arranged on the inner circumferential surface;
the dustproof cover is arranged on one side of the nut piece along the axis, is arranged outside the screw guide part, and comprises a body and at least one scraping and brushing piece arranged on the body, wherein the body is provided with a first end surface, a second end surface opposite to the first end surface along the axis, an inner ring surface which is connected between the first end surface and the second end surface and can surround and generate an inner hole, an outer ring surface opposite to the inner ring surface, and at least one positioning groove group which is concavely arranged from the first end surface to the second end surface, the positioning groove group is provided with a plurality of positioning grooves which are arranged at intervals around the axis, each positioning groove of the positioning groove group is respectively provided with a groove opening part corresponding to the inner ring surface and a groove bottom part between the groove opening part and the outer ring surface, and the distance from the groove bottom part of each positioning groove to the corresponding groove opening part is unequal, the scraping and brushing part is at least arranged in one positioning groove of the positioning groove group and is provided with a positioning part positioned at the bottom of the groove and a scraping and brushing part which is opposite to the positioning part and extends into the inner hole.
2. The ball nut with dust cap of claim 1, wherein: the number of the positioning groove groups of the dustproof cover is several, and the positioning groove groups are arranged around the axis at equal intervals.
3. The ball nut with dust cap according to claim 2, characterized in that: each positioning groove of the positioning groove group of the dust cover extends from the groove bottom to the groove opening part along the respective center line, the distance between the center line of each positioning groove and the reference plane passing through the axis is unequal, the extending axial direction of the center line of each positioning groove is substantially parallel to the reference plane, and the reference plane extends substantially along the radial direction of the shaft hole.
4. The ball nut with dust cover according to any one of claims 1 to 3, wherein: the shield the constant head tank is step slotted hole form, the constant head tank still respectively have corresponding to the expanding section of tank bottom portion, and by the expanding section court the extending section that notch portion extends, the expanding section correspond to the hoop width of body is greater than the extending section correspond to the hoop width of body, just scrape the location portion card that the brush was put and is fixed a position in the expanding section, location portion correspond to the hoop width of body is greater than scrape the brush portion correspond to the hoop width of body.
5. The ball nut with dust cap of claim 4, wherein: the scraping and brushing part of the dustproof cover is a hairbrush.
6. The ball nut with dust cap according to claim 2, characterized in that: each positioning groove of the positioning groove group of the dust cover extends from the groove bottom to the groove opening part along the respective central line, and the intersection angles of the planes of the positioning grooves passing through the respective central lines and the reference plane passing through the axis are not equal.
7. The ball nut with dust cap of claim 1, wherein: suitable screw thread is in the lead screw, the lead screw wears to locate the shaft hole of nut spare, and in the hole of shield, and have the surface, and center on the axis just is the spiral and extends and set up in the thread groove of surface, scrape brush portion can support in the thread groove of lead screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711038907.7A CN109723782B (en) | 2017-10-31 | 2017-10-31 | Ball nut with dust cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711038907.7A CN109723782B (en) | 2017-10-31 | 2017-10-31 | Ball nut with dust cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109723782A CN109723782A (en) | 2019-05-07 |
| CN109723782B true CN109723782B (en) | 2020-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711038907.7A Active CN109723782B (en) | 2017-10-31 | 2017-10-31 | Ball nut with dust cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109723782B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09303517A (en) * | 1996-05-20 | 1997-11-25 | Nippon Seiko Kk | Ball screw |
| CN2573781Y (en) * | 2002-09-25 | 2003-09-17 | 上银科技股份有限公司 | Ball screw with combined scraping and brushing device |
| CN1678845A (en) * | 2002-08-28 | 2005-10-05 | Thk株式会社 | Ball screw |
| JP2006112517A (en) * | 2004-10-14 | 2006-04-27 | Nsk Ltd | Ball screw |
| CN103104668A (en) * | 2011-11-14 | 2013-05-15 | 上银科技股份有限公司 | Ball screw of scraping-brushing machine with locating structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7788987B2 (en) * | 2006-03-29 | 2010-09-07 | Hiwin Technologies Corp. | Self-lubricating ball screw |
-
2017
- 2017-10-31 CN CN201711038907.7A patent/CN109723782B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09303517A (en) * | 1996-05-20 | 1997-11-25 | Nippon Seiko Kk | Ball screw |
| CN1678845A (en) * | 2002-08-28 | 2005-10-05 | Thk株式会社 | Ball screw |
| CN2573781Y (en) * | 2002-09-25 | 2003-09-17 | 上银科技股份有限公司 | Ball screw with combined scraping and brushing device |
| JP2006112517A (en) * | 2004-10-14 | 2006-04-27 | Nsk Ltd | Ball screw |
| CN103104668A (en) * | 2011-11-14 | 2013-05-15 | 上银科技股份有限公司 | Ball screw of scraping-brushing machine with locating structure |
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| Publication number | Publication date |
|---|---|
| CN109723782A (en) | 2019-05-07 |
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